A fairly distinctive species with an orangey-red cap with crenate margins and decurrent gills. Common in unimproved grassland and dune-systems. It can tolerate slightly acidic conditions

References: 
Boertmann, D. (2010 revised second edition) The Genus Hygrocybe
Hedger, J. & George, D. (2018) Lundy Fungi: a photographic guide
Wood, E. & Dunkelman, J. (2017) Grassland Fungi: a field guide
Harries, D. (2017) A Guide to Waxcaps in West Wales